Anti-overflow air pipe head and manufacturing method thereof

Abstract

The invention discloses an anti-overflow air pipe head and a manufacturing method thereof, and the anti-overflow air pipe head comprises a cylinder body which is hollow inside and is provided with exhaust holes at two ends. The cylinder covers are arranged at the two ends of the cylinder body and comprise the upper cylinder cover and the lower cylinder cover, and through holes corresponding to the exhaust holes are formed in the cylinder covers. The anti-overflow air pipe head has the advantages of being simple in structure, easy to manufacture, convenient to install and the like, and is suitable for being applied to ship cabins with special requirements. The anti-overflow air pipe head can automatically close the ventilation opening when an oil tank is filled with oil to the position of a floating ball, and oil is prevented from overflowing; when the oil drops, the ventilation opening is automatically opened, air convection is achieved, and the air pressure of the cabin is balanced.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, specifically relating to an anti-overflow air pipe head and its manufacturing method. Background Technology

[0002] Air ducts are essential for ventilation in ship cabins, balancing cabin pressure and preventing seawater backflow. Existing standard air ducts are installed at the end of pipes, allowing connection to a pipe at only one end, and are solely for ventilation, lacking the function of preventing liquid overflow. For special-purpose vessels requiring protection against liquid overflow, this type of air duct is unsuitable. Therefore, a new type of air duct needs to be designed, whose main functions include ventilation, fire prevention, and protection against liquid overflow, and which can be connected between pipes. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides an anti-overflow air pipe head and its manufacturing method, which solves the problem that the air pipe head cannot prevent liquid overflow in the cabin.

[0004] The objective of this invention is achieved through the following technical solution: an anti-overflow air nozzle, comprising:

[0005] The cylinder is hollow inside and has exhaust holes at both ends.

[0006] The cylinder cover is located at both ends of the cylinder body, including an upper cylinder cover and a lower cylinder cover, and the cylinder cover is provided with a through hole corresponding to the vent hole.

[0007] Preferably, a fireproof mesh is installed at the vent at one end of the cylinder.

[0008] Preferably, the cylinder is equipped with a pipe head opening and closing device. After the liquid enters the cylinder, the pipe head opening and closing device floats up under the action of buoyancy and connects with the vent hole of the cylinder to achieve the sealing of the vent hole. After the liquid level drops, the pipe head opening and closing device descends and opens the vent hole.

[0009] Preferably, the pipe head opening and closing device includes:

[0010] A sealing ring is installed around the vent hole.

[0011] The float has a cross-sectional area on its upper surface that is larger than the outer perimeter of the sealing ring. Under the action of buoyancy, it floats up and fits tightly against the vent hole.

[0012] The pipe opening and closing device, fireproof net and sealing ring are all set at the vent hole at the end where the cylinder body and the upper cylinder cover are connected.

[0013] Preferably, the buoy includes:

[0014] The float seat is a hollow cylindrical cavity fixed around the vent hole, and has multiple elongated holes on it.

[0015] The float is located inside the float seat.

[0016] Preferably, the cylinder cover is made by welding a flange and a short pipe.

[0017] Preferably, the cap and the cylinder body are connected by bolts.

[0018] In addition to providing an anti-overflow air nozzle, the present invention further provides a method for manufacturing the above-mentioned anti-overflow air nozzle, the specific steps of which are as follows:

[0019] Step 1: Weld the flange to the short pipe to form the upper cylinder cover and the lower cylinder cover;

[0020] Step 2: Inside the cylinder on one side of the upper cover, connect the fireproof mesh and the sealing ring with bolts respectively;

[0021] Step 3: Place the float inside the float seat and fix the float seat around the vent hole on one side of the upper cylinder cover;

[0022] Step 4: Connect the upper and lower cylinder covers to both ends of the cylinder body using bolts.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The anti-overflow air nozzle provided by this invention has the advantages of simple structure, easy manufacturing, and convenient installation, making it suitable for ship compartment applications with special requirements. This anti-overflow air nozzle can automatically close the vent when the fuel tank is filled to the float position to prevent fuel spillage; when the fuel level drops, it automatically opens the vent to achieve air convection and balance the air pressure in the compartment.

[0025] This invention solves the problem that the air pipe head cannot prevent liquid overflow in the chamber, allowing chambers with special needs to be ventilated normally. The vent automatically closes when the liquid medium in the tank reaches the float position and automatically opens when the liquid level drops. The air pipe head can also be installed in the middle of the pipeline. Attached Figure Description

[0026] Figure 1 This is a top view of the upper cylinder cover structure in an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of direction AA;

[0028] Figure 3 This is a top view of the lower cylinder cover structure in an embodiment of the present invention;

[0029] Figure 4 for Figure 3 A schematic diagram of direction AA;

[0030] Figure 5This is a top view of the cylindrical structure in an embodiment of the present invention;

[0031] Figure 6 for Figure 5 A schematic diagram of direction AA;

[0032] Figure 7 This is a schematic diagram of the side structure of the fireproof mesh in an embodiment of the present invention;

[0033] Figure 8 This is a top view of the fireproof mesh structure in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the sealing ring structure in an embodiment of the present invention;

[0035] Figure 10 This is a top view of the sealing ring structure in an embodiment of the present invention;

[0036] Figure 11 This is a side view of the float seat structure in an embodiment of the present invention;

[0037] Figure 12 This is a top view of the float seat structure in an embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of the anti-overflow air pipe head structure in an embodiment of the present invention.

[0039] In the diagram, 1 is the upper cylinder cover; 2 is the cylinder body; 3 is the lower cylinder cover; 4 is the float seat; 5 is the fireproof mesh; 6 is the sealing ring; 7 is the float; and 8 is the vent hole. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] The present invention provides an overflow prevention air nozzle, comprising:

[0042] The cylinder 2 is hollow inside and has exhaust holes 8 at both ends;

[0043] The cylinder cover, located at both ends of the cylinder body 2, includes an upper cylinder cover 1 and a lower cylinder cover 3, with a through hole corresponding to the exhaust port 8 on the cylinder cover. The anti-overflow air pipe head provided by the present invention can be connected to a pipeline at both ends. By using the upper cylinder cover 1 and the lower cylinder cover 3 to connect the anti-overflow air pipe head to the internal and external ventilation pipes of the cabin, air convection can be achieved to balance the cabin air pressure.

[0044] In one embodiment of the present invention, a fireproof mesh 5 is provided at the vent 8 at one end of the cylinder 2.

[0045] In one embodiment of the present invention, a pipe-head opening and closing device is provided inside the cylinder 2. After liquid enters the cylinder, the pipe-head opening and closing device floats up under the action of buoyancy and connects with the vent hole 8 of the cylinder 2 to achieve a seal of the vent hole. After the liquid level drops, the pipe-head opening and closing device descends and opens the vent hole 8. In this embodiment, both ends of the anti-overflow air pipe head can be connected to pipes to prevent oil from overflowing. After the liquid medium flows in from the lower end, as the liquid level rises, the pipe-head opening and closing device floats up until it connects with the vent hole 8 of the cylinder 2 to achieve a seal of the vent hole.

[0046] In one embodiment of the present invention, a specific structure of a pipe head opening and closing device is provided, comprising:

[0047] The sealing ring 6 is installed around the vent hole 8;

[0048] The float has a cross-sectional area on its upper surface that is larger than the outer periphery of the sealing ring 6, and floats up and fits tightly against the vent hole 8 under the action of buoyancy;

[0049] The pipe opening and closing device, fireproof mesh 5, and sealing ring 6 are all located at the vent hole 8 at the end where the cylinder 2 connects to the upper cylinder cover 1. As a further optimization of this embodiment, the float includes:

[0050] The float seat 4 is a hollow cylindrical cavity, fixed around the vent hole 8, and has multiple elongated holes on it;

[0051] The float 7 is located inside the float seat 4. The float seat 4 can automatically close the vent when the liquid medium in the tank reaches the position of the float 7 to prevent oil spillage; when the liquid level drops, it can automatically open the vent to achieve air convection and balance the air pressure in the compartment.

[0052] In one embodiment of the present invention, the cylinder cover is formed by welding a flange and a short pipe.

[0053] In one embodiment of the present invention, the cap and the cylinder body 2 are connected by bolts.

[0054] In addition to providing an anti-overflow air nozzle, the present invention further provides a method for manufacturing the aforementioned anti-overflow air nozzle, the specific steps of which are as follows:

[0055] Step 1: Weld the flange to the short pipe to form the upper cylinder cover 1 and the lower cylinder cover 3;

[0056] Step 2: Connect the upper cylinder cover 1 and the lower cylinder cover 3 to both ends of the cylinder body 2 using bolts.

[0057] In one embodiment of the present invention, Figure 13 The manufacturing method of the anti-overflow air nozzle is as follows:

[0058] Step 1: Weld the flange to the short pipe to form the upper cylinder cover 1 and the lower cylinder cover 3;

[0059] Step 2: Inside the cylinder 2 on one side of the upper cylinder cover 1, connect the fireproof mesh 5 and the sealing ring 6 with bolts respectively;

[0060] Step 3: Place the float 7 inside the float seat 4 and fix the float seat to the outside of the vent hole 8 of the cylinder 2 on one side of the upper cylinder cover 1;

[0061] Step 4: Connect the upper cylinder cover 1, the lower cylinder cover 3, and both ends of the cylinder body 2 with bolts.

[0062] Specifically, the main materials for the anti-overflow air nozzle include: stainless steel flange, stainless steel short pipe, upper and lower cylinder covers, cylinder body, sealing ring, stainless steel float, and ball seat. Its manufacturing process is as follows:

[0063] Prepare two stainless steel flanges conforming to CB / T46-2007, with a specification of A16040.

[0064] Prepare two stainless steel pipes, each 60mm long, 48mm in outer diameter, and 4mm thick.

[0065] Prepare an upper cylinder cap with dimensions of 120×120×22 (length×width×height). Figures 1 to 2 As shown.

[0066] Prepare a bottom cap with dimensions of 120×120×10 (length×width×height), such as... Figures 3 to 4 As shown.

[0067] Weld the two stainless steel flanges and two stainless steel short pipes to the upper and lower cylinder covers respectively. Figure 8 The short tube style of parts 1 and 2 has a weld height of 3mm.

[0068] Prepare a stainless steel cylinder, such as Figures 5 to 6 As shown.

[0069] Prepare a stainless steel fireproof mesh, such as Figures 7 to 8 As shown.

[0070] Prepare a sealing ring, such as Figures 9 to 10 As shown.

[0071] Prepare a stainless steel float ball with a diameter of Φ60mm and a thickness of 1mm.

[0072] Prepare a ball stand, such as Figures 11 to 12 As shown.

[0073] Assemble the welded upper and lower cylinder covers, cylinder body, sealing ring, stainless steel float, and ball seat in sequence, and connect each part with fasteners, such as... Figure 13 As shown.

[0074] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An overflow-proof air nozzle, characterized in that: The anti-overflow air nozzle includes: The cylinder (2) is hollow inside and has exhaust holes (8) at both ends; The cylinder cover is provided at both ends of the cylinder (2), including an upper cylinder cover (1) and a lower cylinder cover (3), and the cylinder cover is provided with a through hole corresponding to the exhaust hole (8).

2. The anti-overflow air nozzle as described in claim 1, characterized in that: A fireproof mesh (5) is provided at the vent (8) at one end of the cylinder (2).

3. The anti-overflow air nozzle as described in claim 2, characterized in that: The cylinder (2) is equipped with a pipe head opening and closing device. After the liquid enters the cylinder, the pipe head opening and closing device floats up under the action of buoyancy and connects with the vent hole (8) of the cylinder (2) to achieve vent hole sealing. After the liquid level drops, the pipe head opening and closing device descends and opens the vent hole (8).

4. An anti-overflow air nozzle as described in claim 3, characterized in that: The pipe head opening and closing device includes: A sealing ring (6) is provided around the vent hole (8); The float has a cross-sectional area on its upper surface that is larger than the outer periphery of the sealing ring (6), and floats up and fits tightly against the vent hole (8) under the action of buoyancy; The pipe head opening and closing device, fireproof net (5) and sealing ring (6) are all located at the vent hole (8) at the end where the cylinder (2) is connected to the upper cylinder cover (1).

5. An anti-overflow air nozzle as described in claim 4, characterized in that: The floating body includes: The float seat (4) is a hollow cylindrical cavity, fixed around the vent hole (8), and has multiple elongated holes on it; A float (7) is disposed inside the float seat (4).

6. The anti-overflow air nozzle as described in claim 1, characterized in that: The cylinder cover is made by welding a flange and a short pipe.

7. An anti-overflow air nozzle as described in claim 6, characterized in that: The cap is connected to the cylinder body (2) by bolts.

8. A method for manufacturing an anti-overflow air nozzle, characterized in that: The method is used to manufacture the anti-overflow air nozzle according to any one of claims 1-7, and the specific steps of the method are as follows: Step 1: Weld the flange to the short pipe to form the upper cylinder cover (1) and the lower cylinder cover (3); Step 2: Connect the upper cylinder cover (1), the lower cylinder cover (3) to both ends of the cylinder body (2) using bolts.

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